Interpolation filter and method for digitally interpolating a digital signal
US7225213B2 · kind B2 · utility
2Cited by
7References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 2, 2001 |
| Grant date | May 29, 2007 |
| Priority date | — |
| Expiry date | Mar 21, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H17/0664
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The invention relates to an interpolation filter and to a method for filtering a digital input signal. The interpolation filter has an amplitude characteristic with a low-pass-shaped damping curve in the useful signal frequency range of the digital input signal. The group delay time of the interpolation filter is essentially constant in the useful signal frequency range and can be adjusted within a clock period of the equidistant digital signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.